Предмет: Математика, автор: marausch2009

подскажите пожалуйста как решить 30 х-(5х+4х)

Ответы

Автор ответа: kiriput

Ответ:30x -(5x+4x) = 30x - 9x = 21x

Пошаговое объяснение:

marausch2009: спасибо

Автор ответа: aAlena43

Ответ: 21x

Пошаговое объяснение: 30x-(5x+4x)= 30x - 5x-4x

30-5-4= 21

21*x = 21x

marausch2009: спасибо

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